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https://jira.codehaus.org/browse/MNG-3522?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=347774#comment-347774
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Jörg Schaible commented on MNG-3522:
------------------------------------

Please consider that you might have two different cases with something like 
dependsOn:
# Hard requirement i.e. the execution can happen only if the depending 
execution has been performed
# Soft requirement i.e. the execution will happen either after the depending 
execution or if the depending execution does not exist

The latter case might occur if you add executions from profiles.

For an implementation you may opt for soft requirements only (ignoring 
"unknown" executions) or for a different notation like notating the execution 
names with a soft requirement in brackets. Both solutions have its pros and 
cons.

> Cannot define execution order explicitly
> ----------------------------------------
>
>                 Key: MNG-3522
>                 URL: https://jira.codehaus.org/browse/MNG-3522
>             Project: Maven 2 & 3
>          Issue Type: New Feature
>          Components: Plugins and Lifecycle
>    Affects Versions: 2.0.9
>            Reporter: Thomas Diesler
>             Fix For: Issues to be reviewed for 3.x
>
>
> In this example antrun:run is excuted after dependency:copy-dependencies by 
> virtue of plugin order. Preferable would be an explicit order definition. For 
> example, a plugin could export a 'phase-id' that another uses in its 'phase' 
> element.
> {code:xml}
> <plugins>
>   <plugin>
>     <groupId>org.apache.maven.plugins</groupId>
>     <artifactId>maven-dependency-plugin</artifactId>
>     <executions>
>       <execution>
>         <id>copy-dependencies</id>
>         <phase>package</phase>
>         <goals>
>           <goal>copy-dependencies</goal>
>         </goals>
>         <configuration>
>           
> <outputDirectory>${project.build.directory}/thirdparty</outputDirectory>
>           <stripVersion>true</stripVersion>
>         </configuration>
>       </execution>
>     </executions>
>   </plugin>
>   <plugin>
>     <artifactId>maven-antrun-plugin</artifactId>
>     <executions>
>       <execution>
>         <phase>package</phase>
>         <goals>
>           <goal>run</goal>
>         </goals>
>         <configuration>
>           <tasks>
>             <ant antfile="ant/build-concat.xml"/>
>           </tasks>
>         </configuration>
>       </execution>
>     </executions>
>   </plugin>
> </plugins>
> {code}



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